code: def _clear_current_sub_backends():
      global original_backend_dict
      original_backend_dict = None
      if ivy.current_sub_backends:
          ivy.current_sub_backends.clear()
  
file_path: ivy/ivy/utils/backend/sub_backend_handler.py
imports: import os
  import re
  from types import ModuleType, FunctionType
  import logging
  import importlib
  import ivy
  from ivy.func_wrapper import _wrap_function
  from ivy.utils.exceptions import IvyException
label_desc: Use image node_id 9 for calling a global function with example usage: _clear_current_sub_backends() without return types